Upgrade .NET version and setup action

Update FlowSynx.PluginCore version to 1.3.4

#17

Remove logging from CSV writing process

This commit removes logging statements that output column headers and values during the CSV writing process. The final logging of the writer's output and the return statement for the writer's string representation have also been deleted, resulting in a cleaner output without logging details.

#13

Update CsvPlugin version to 1.2.1

Bump the version number of the CsvPlugin from 1.2.0 to 1.2.1.

#12

Change the plugin version

#9

Update README file to add description for read operation

#7

Create release.yml